Additional uncaught exception thrown while handling exception.

Original

PDOException: SQLSTATE[HY000] [2003] Can't connect to MySQL server on 'zeenews-dev-mariadb.cf8dqly5zndw.ap-southeast-1.rds.amazonaws.com' (104) in drupal_is_denied() (line 1923 of /var/www/zeenews-english-app/includes/bootstrap.inc).

Additional

PDOException: SQLSTATE[HY000] [2003] Can't connect to MySQL server on 'zeenews-dev-mariadb.cf8dqly5zndw.ap-southeast-1.rds.amazonaws.com' (111) in dblog_watchdog() (line 147 of /var/www/zeenews-english-app/modules/dblog/dblog.module).